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Subject[PATCH net-next 4/6] net: ipa: register IPA interrupt handlers directly
Date
Declare the microcontroller IPA interrupt handler publicly, and
assign it directly in ipa_interrupt_config(). Make the SUSPEND IPA
interrupt handler public, and rename it ipa_power_suspend_handler().
Assign it directly in ipa_interrupt_config() as well.

This makes it unnecessary to do this in ipa_interrupt_add(). Make
similar changes for removing IPA interrupt handlers.

The next two patches will finish the cleanup, removing the
add/remove functions and the handler array entirely.

Signed-off-by: Alex Elder <elder@linaro.org>
---
drivers/net/ipa/ipa_interrupt.c | 16 ++++++++--------
drivers/net/ipa/ipa_power.c | 14 ++------------
drivers/net/ipa/ipa_power.h | 12 ++++++++++++
drivers/net/ipa/ipa_uc.c | 2 +-
drivers/net/ipa/ipa_uc.h | 8 ++++++++
5 files changed, 31 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c
index 87f4b94d02a3f..f32ac40a79372 100644
--- a/drivers/net/ipa/ipa_interrupt.c
+++ b/drivers/net/ipa/ipa_interrupt.c
@@ -26,6 +26,8 @@
#include "ipa.h"
#include "ipa_reg.h"
#include "ipa_endpoint.h"
+#include "ipa_power.h"
+#include "ipa_uc.h"
#include "ipa_interrupt.h"

/**
@@ -228,20 +230,14 @@ void ipa_interrupt_simulate_suspend(struct ipa_interrupt *interrupt)
void ipa_interrupt_add(struct ipa_interrupt *interrupt,
enum ipa_irq_id ipa_irq, ipa_irq_handler_t handler)
{
- if (WARN_ON(ipa_irq >= IPA_IRQ_COUNT))
- return;
-
- interrupt->handler[ipa_irq] = handler;
+ WARN_ON(ipa_irq >= IPA_IRQ_COUNT);
}

/* Remove the handler for an IPA interrupt type */
void
ipa_interrupt_remove(struct ipa_interrupt *interrupt, enum ipa_irq_id ipa_irq)
{
- if (WARN_ON(ipa_irq >= IPA_IRQ_COUNT))
- return;
-
- interrupt->handler[ipa_irq] = NULL;
+ WARN_ON(ipa_irq >= IPA_IRQ_COUNT);
}

/* Configure the IPA interrupt framework */
@@ -284,6 +280,10 @@ struct ipa_interrupt *ipa_interrupt_config(struct ipa *ipa)
goto err_free_irq;
}

+ interrupt->handler[IPA_IRQ_UC_0] = ipa_uc_interrupt_handler;
+ interrupt->handler[IPA_IRQ_UC_1] = ipa_uc_interrupt_handler;
+ interrupt->handler[IPA_IRQ_TX_SUSPEND] = ipa_power_suspend_handler;
+
return interrupt;

err_free_irq:
diff --git a/drivers/net/ipa/ipa_power.c b/drivers/net/ipa/ipa_power.c
index 9148d606d5fc2..4198f8e97e40b 100644
--- a/drivers/net/ipa/ipa_power.c
+++ b/drivers/net/ipa/ipa_power.c
@@ -202,17 +202,7 @@ u32 ipa_core_clock_rate(struct ipa *ipa)
return ipa->power ? (u32)clk_get_rate(ipa->power->core) : 0;
}

-/**
- * ipa_suspend_handler() - Handle the suspend IPA interrupt
- * @ipa: IPA pointer
- * @irq_id: IPA interrupt type (unused)
- *
- * If an RX endpoint is suspended, and the IPA has a packet destined for
- * that endpoint, the IPA generates a SUSPEND interrupt to inform the AP
- * that it should resume the endpoint. If we get one of these interrupts
- * we just wake up the system.
- */
-static void ipa_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
+void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
{
/* To handle an IPA interrupt we will have resumed the hardware
* just to handle the interrupt, so we're done. If we are in a
@@ -336,7 +326,7 @@ int ipa_power_setup(struct ipa *ipa)
int ret;

ipa_interrupt_add(ipa->interrupt, IPA_IRQ_TX_SUSPEND,
- ipa_suspend_handler);
+ ipa_power_suspend_handler);
ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND);

ret = device_init_wakeup(&ipa->pdev->dev, true);
diff --git a/drivers/net/ipa/ipa_power.h b/drivers/net/ipa/ipa_power.h
index 896f052e51a1c..3a4c59ea1222b 100644
--- a/drivers/net/ipa/ipa_power.h
+++ b/drivers/net/ipa/ipa_power.h
@@ -10,6 +10,7 @@ struct device;

struct ipa;
struct ipa_power_data;
+enum ipa_irq_id;

/* IPA device power management function block */
extern const struct dev_pm_ops ipa_pm_ops;
@@ -47,6 +48,17 @@ void ipa_power_modem_queue_active(struct ipa *ipa);
*/
void ipa_power_retention(struct ipa *ipa, bool enable);

+/**
+ * ipa_power_suspend_handler() - Handler for SUSPEND IPA interrupts
+ * @ipa: IPA pointer
+ * @irq_id: IPA interrupt ID (unused)
+ *
+ * If an RX endpoint is suspended, and the IPA has a packet destined for
+ * that endpoint, the IPA generates a SUSPEND interrupt to inform the AP
+ * that it should resume the endpoint.
+ */
+void ipa_power_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id);
+
/**
* ipa_power_setup() - Set up IPA power management
* @ipa: IPA pointer
diff --git a/drivers/net/ipa/ipa_uc.c b/drivers/net/ipa/ipa_uc.c
index af541758d047f..6b7d289cfaffa 100644
--- a/drivers/net/ipa/ipa_uc.c
+++ b/drivers/net/ipa/ipa_uc.c
@@ -170,7 +170,7 @@ static void ipa_uc_response_hdlr(struct ipa *ipa)
}
}

-static void ipa_uc_interrupt_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
+void ipa_uc_interrupt_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
{
/* Silently ignore anything unrecognized */
if (irq_id == IPA_IRQ_UC_0)
diff --git a/drivers/net/ipa/ipa_uc.h b/drivers/net/ipa/ipa_uc.h
index 8514096e6f36f..85aa0df818c23 100644
--- a/drivers/net/ipa/ipa_uc.h
+++ b/drivers/net/ipa/ipa_uc.h
@@ -7,6 +7,14 @@
#define _IPA_UC_H_

struct ipa;
+enum ipa_irq_id;
+
+/**
+ * ipa_uc_interrupt_handler() - Handler for microcontroller IPA interrupts
+ * @ipa: IPA pointer
+ * @irq_id: IPA interrupt ID
+ */
+void ipa_uc_interrupt_handler(struct ipa *ipa, enum ipa_irq_id irq_id);

/**
* ipa_uc_config() - Configure the IPA microcontroller subsystem
--
2.34.1
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